Furthermore

Every museum that proudly displays a Van Gogh has reason to be nervous. Curators in Amsterdam, preparing a definitive catalog for publication in the year 2001, have concluded that around 50 of the world's 900-odd Van Gogh's, or one in every 230, are forged or misattributed. Among the fakes identified so far: a seascape in the Ny Carlsberg Glyptothek in Copenhagen and a self- portrait in the Austrian National Galley in Vienna.